Power factor of series LCR circuit at resonance is
Power factor of series LCR circuit at resonance is
Option 1 -
Option 2 -
Option 3 -
1
Option 4 -
Zero
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1 Answer
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Correct Option - 3
Detailed Solution:At resonance VL = VC
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On increasing XC decreases so Z decreases, current in circuit increases.
R =
L = 2 mH
E = 9V
Just after the switch ‘S’ is closed, the inductor acts as open circuit.
Since current is in phase with voltage, it means circuit is in resonance, so we can write
f =
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